A holodeck gunslinger in Alexander Rozhenko's Ancient West programme, the son of the outlaw boss Frank Hollander, who becomes dangerous in 2369 when a malfunction gives him Data's abilities.
Eli Hollander appears in the sixth-season episode A Fistful of Datas. In the programme, set in Deadwood, Worf plays the sheriff, Alexander his deputy and Deanna Troi a mysterious stranger called Durango. Eli, known as the Butcher of Bozeman, is the villain they arrest in the saloon.
Meanwhile an experiment linking Data to the ship's computer goes wrong, and the holodeck characters begin to take on Data's face and his strength and speed. Eli is the first to change, and the safety protocols fail.
Eli's father, Frank, also now a copy of Data, takes Alexander hostage and demands his son's release. Worf survives the final showdown with the help of an improvised personal force field. Eli was played by John Pyper-Ferguson, and then by Brent Spiner.